Inclusive, prompt and non-prompt J/$\psi$ production at mid-rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{N}\mathrm{N}}}$ = 2.76 TeV

The transverse momentum ($p_{\mathrm{T}}$) dependence of the nuclear modification factor $R_{\mathrm{A}\mathrm{A}}$ and the centrality dependence of the average transverse momentum $⟨p_{\mathrm{T}}⟩$ for inclusive J/$\psi$ have been measured with ALICE for Pb-Pb collisions at $\sqrt{s_{\mathrm{N}\mathrm{N}}}$ = 2.76 TeV in the e${}^{+}$e${}^{-}$ decay channel at mid-rapidity ($\mathrm{\mid }y\mathrm{\mid }<0.8$). The $\langle p_{\rm T}\rangle$ is significantly smaller than the one observed for pp collisions at the same centre-of-mass energy. Consistently, an increase of $R_{\mathrm{A}\mathrm{A}}$ is observed towards low $p_{\mathrm{T}}$. These observations might be indicative of a sizable contribution of charm quark coalescence to the J/$\psi$ production. Additionally, the fraction of non-prompt J/$\psi$ from beauty hadron decays, $f_{\mathrm{B}}$, has been determined in the region $1.5<p_{\mathrm{T}}<10$ GeV/c in three centrality intervals. No significant centrality dependence of $f_{\mathrm{B}}$ is observed. Finally, the $R_{\mathrm{A}\mathrm{A}}$ of non-prompt J/$\psi$ is discussed and compared with model predictions. The nuclear modification in the region $4.5 < p_{\rm T} < 10$ GeV/c is found to be stronger than predicted by most models.